Obtaining fluids from wells (E21B43)

E21B43/013 - (9)
E21B43/04 - Gravelling of wells(101)
E21B43/08 - Screens or liners(452)
E21B43/11 - Perforators; permeators(867)
E21B43/112 - (91)
E21B43/114 - (195)
E21B43/116 - (92)
E21B43/117 - (203)
E21B43/118 - (29)
E21B43/1185 - (22)
E21B43/119 - (15)
E21B43/20 - Displacing by water(847)
E21B43/241 - (2)
E21B43/243 - (69)
E21B43/247 - (7)
E21B43/248 - (7)
E21B43/263 - (152)
E21B43/267 - (208)
E21B43/285 - (11)
E21B43/295 - (146)
E21B43/38 - In the well(176)

ethod of multi-stage treatment of injection well bottomhole zone in terrigenous and carbonate formations // 2642738
FIELD: oil and gas industry.SUBSTANCE: method of multi-stage treatment of injection well bottomhole zone in terrigenous and carbonate formations includes hydrochloric acid treatment with acid composition of 0.5-1m3/m volume followed by pressing with aqueous solution of colloidal silicon dioxide nanoparticles or aqueous solution of surface-active substance of 2-3 m3/m volume; clay-acid treatment with clay-acid composition based on hydrochloric and hydrofluoric acids with 0.8 0.5 m3/m volume followed by pressing with aqueous solution of colloidal silicon dioxide nanoparticles or an aqueous solution of surface-active substance of 2-3 m3/m volume, treatment with hydrocarbon solvent of 0.5 m3/m volume and with clay-acid composition based on hydrochloric and hydrofluoric acids with 0.5 m3/m volume then by spraying aqueous solution of colloidal silicon dioxide nanoparticles or aqueous solution of surface-active substance of 2-3 m3/m volume. The following composition is used as acid composition, vol %: 30% hydrochloric acid 50-63; diethylene glycol 6-16; acetic acid 1-3; water-repellent agent based on amides, 1-3; corrosion inhibitor, 1.5-2; the rest is process water. The following composition is used as the clay-acid composition, vol %: 30% hydrochloric acid 48-60; hydrofluoric acid 1-4; diethylene glycol 6-16; acetic acid 1-3; water-repellent agent based on amides, 1-3; corrosion inhibitor, 1.5-2; the rest is process water. As aqueous solution of colloidal silicon dioxide nanoparticles, 1-2%- aqueous solution of colloidal silicon dioxide nanoparticles is used, containing wt %: colloidal silicon dioxide in acrylic acid, 32-40; propylene glycol monomethyl ether, 59.5-67.5; the rest is water. Aqueous solution of surface-active substance is 2-4% aqueous solution of surface-active substance containing, wt %: diethylene glycol, 1-3; hydrophobic agent based on amides, 0.5-2; the rest is process water. Solvent based on toluene fraction of straight-run gasoline or based on an aromatic hydrocarbon concentrateC10 is used a hydrocarbon solvent.EFFECT: increased efficiency injection wells, reduced time for implementation of the method, its simplification and reduced cost.2 cl, 7 dwg
ethod for accumulation of cold in formation // 2642611
FIELD: oil and gas industry.SUBSTANCE: method for accumulating cold in the formation involves the use of a two-tube arrangement in a dual horizontal well, lowering of a first lift pipe with packer installation for separating the annulus and production of oil, lowering a second lift pipe of smaller diameter. Coolant is circulated by means of injection into the second lift pipe and lifting along the annulus. In this case, the formation is cooled simultaneously with production of oil from the well, as a result the conditions for keeping hydrates at the boundary of gas-oil contact are provided.EFFECT: increased oil recovery of oil-gas condensate fields due to presence of hydrate barrier at the boundary of gas-oil contact.1 dwg

Drill string filter // 2642580
FIELD: mining engineering.SUBSTANCE: invention relates to filtering devices for cleaning drilling mud and protecting drilling equipment against the ingress of large mechanical particles. The filter includes a perforated tube installed in axial channel of a hollow body. An adapter provided with a gripping device for removing the filter is mounted on the upper end of the perforated tube. A swirler in the form of a spiral is installed in the axial channel of the adapter. A flow splitter is installed in the middle part of the perforated pipe, perpendicularly to its axis. The flow splitter is in the form of a rod, on which two bevel cuts are made with formation of a triangle in section which is turned with its vertex to the adapter. A bottom with perforation holes and one radial hole is installed on the lower end of the perforated tube for installation of a cable, which upper end is fixed in the hole a supporting ring body rigidly connected to the adapter.EFFECT: improved reliability by preventing clogging of perforations with slurry, holding filter elements in case of their destruction, reduction of flow rate.3 dwg

Downhole seismic source // 2642199
FIELD: oil and gas industry.SUBSTANCE: downhole seismic source comprises a power element in the form of a variable diameter hydraulic cylinder provided with a plunger that interacts with a mechanism of its reciprocal movement along the hydraulic cylinder axis, and a system for supply and control of seismic source. The seismic source is provided with a double-acting electromagnetic hammer mounted coaxially with the power element, in which non-detachable cylindrical housing there are coils of return and forward strokes of the striker, poles and inductive sensors rigidly mounted on the diamagnetic guide, and the striker. The lower end of the striker interacts with the plunger of the hydraulic cylinder. The cavities of electromagnetic hammer are evacuated from the side of the lower and upper ends of the striker, and the longitudinal grooves are made on the outer surfaces of the electromagnetic hammer body and the hydraulic cylinder designed for receiving power supply lines of seismic source electromagnetic hammer coils the and its control system. The communication lines are connected through collector mounted in the upper cover of the electromagnetic hammer and communicated by the cable to the seismic source power supply and control unit.EFFECT: increased efficiency of vibration seismic action directly on oil formation.3 cl, 3 dwg

Well equipment for processing the bottom zone of formation // 2642198
FIELD: oil and gas industry.SUBSTANCE: well equipment for treatment of formation bottomhole zone consists of a jet pump, a production tubing string (PTS), a ground power pump, a ground separation system and a control system. The jet pump includes a mixing chamber and a nozzle. An inlet channel of the jet pump nozzle is connected to the ground power pump through the tubing string. An output of the mixing chamber of the jet pump is connected by a pipeline to the ground separation system. A control valve connected to the jet pump is connected by a communication channel to the control system. In this case, the inlet channel of the jet pump nozzle is further communicated via the control valve with the outlet of the mixing chamber. The control system is made in the ground version.EFFECT: increased reliability of equipment and expanding field of its application.4 cl, 1 dwg

ethod to increase formation hydrocarbon yield and intensify oil-gas-condensate production by means of formation radial penetration with water jet // 2642194
FIELD: oil and gas industry.SUBSTANCE: method includes installing into the well a high-strength tubing, a diverter with inner channel extending therethrough, tying and possible thereof orientation in space in the interval of the lower level drilling of lateral wellbores, sealing the wellhead, installing downhole equipment comprising a water jet nozzle, control unit of the wellbore path, navigation system, working flexible tubing, a device for redistribution of flow, return valve feeding the flexible tubing, supplying liquid into the inter-string area of the tubing/flexible tubing, moving the water jet nozzle through the sealing device. Through the diverter, in contact with rock, drilling of planned length radial wellbore is conducted using the navigation system for monitoring actual position of the wellbore in the formation, and with using the control unit of the wellbore path to provide wellbore drilling along the planned path. After driving the working flexible tubing string with the nozzle through the formation, removal from the formation and well flushing is carried out up to complete discharge of slime. By actuation of the mechanical turning device, the diverter is moved to another plane. The work cycle is repeated for the next lateral wellbore. Milling of a separate port for each lateral wellbore is carried out immediately before performing the main operation for driving lateral wellbores through the diverter. When drilling the lateral wellbore, the wellbore path is determined and changed by supplying the working flexible tubing with wellbore path control unit and the navigation equipment. In order to perform drilling of radial wellbores at the following levels, the supply and working flexible tubing is extracted from the well, tubing is removed from the mechanical anchor, fitting pipe of the tubing that was preinstalled and equal to the length of the transition to the next level is removed, the tubing is seated on the mechanical anchor, and the working flexible tubing with navigation system, control unit of the wellbore path, water jet nozzle is run in into well, after that the operation for drilling of radial wellbores is repeated.EFFECT: increased productivity of wells and hydrocarbons recovery factor, possibility to conduct address action on the formation, possibility to conduct intensification without effecting on string cement support with considerable pressure drop and chemical destruction, possibility to stimulate the formation by a significant pressure drop or chemical failure, cleaning the wellbore when drilling thereof.3 cl, 2 dwg

Bottom-hole insert injector device // 2642192
FIELD: oil and gas industry.SUBSTANCE: insert injector device includes a body that has an inner oil channel configured to provide a through passage of oil. The body further has an annular chamber formed around the inner oil channel. The annular chamber has a chamber opening configured to be connected to receive a flow of a gaseous heat transfer medium. The body also has at least one injector opening providing a passageway between the annular chamber and the inner oil channel. At least one injector port is configured to inject a gaseous heat carrier into the oil passed through the inner oil channel.EFFECT: increased efficiency of the bottom-hole insert injector device.15 cl, 5 dwg

System of hydraulic fracturing of formation with hydraulic energy transmission system // 2642191
FIELD: mining.SUBSTANCE: system includes a hydraulic energy transmission system configured with the possibility of communicating pressure between a first fluid media and a second fluid media. The hydraulic energy transmission system is made so as to minimize or prevent mixing of the first and second fluid media.EFFECT: enhancement of efficiency of the formation hydraulic fracturing.18 cl, 11 dwg

Well pump unit // 2641812
FIELD: oil and gas industry.SUBSTANCE: submersible centrifugal pump with electric motor is installed in the well on a tubing string. A compensator is installed above them. A pneumatic cap with piston is placed therein. From the inside, the piston is spring-loaded by pack series-connected plate springs separated by gaskets. The gaskets form a clearance with pneumatic cap inner surface. The plate springs are configured with different ratios of spring cone height to cone wall thickness and have such power characteristic, so that at parallel connection of forces of spring stack and pressure inert gas on the piston, a resultant restoring force is created with working portion of given low quasi-zero rigidity.EFFECT: increased serviceability and reliability of plant operation, reduced vibration of underground pump equipment caused by presence of gas inclusions in pumped out product.8 dwg
Use of ionized fluid during hydraulic fracturing of formation // 2641681
FIELD: oil and gas industry.SUBSTANCE: method includes: introducing a fluid containing positively charged ions into at least some of the fractures; provision of said ions to convert shales along cracks into aragonite crystals so that some of the aragonite crystals become suspended in the fluid; removing some of the fluid with the weighted aragonite crystals from said formation. Removal of the aragonite crystals opens or expands the fractures and increases the permeability of the formation by increasing the amount and production rate of hydrocarbons from said formation. The fluid remaining in the mass continues to convert the following calcite crystals along cracks into aragonite crystals, so that aragonite becomes more weighted in the fluid, a certain amount of the weighted aragonite fluid is removed from said formation, thereby further increasing or maintaining the permeability of said formation.EFFECT: increased hydrocarbon production efficiency.11 cl, 39 dwg

Rock oriented cutting device // 2641679
FIELD: mining.SUBSTANCE: device includes a hollow cylindrical body with radial holes bushing with the bevelled inside edges, sleeve liquid permeable material, filled with loose substance solidified when interacting with the fluid. It is equipped with a second sleeve. The hollow cylindrical body with radial holes is made in the form of a cup which, on the side opposite to its bottom, is inserted with the possibility of longitudinal displacement into the sleeve to radial holes. The bushing from the side free from the mentioned housing is fastened to a pipe string for supplying a working fluid. One of these hoses is wound on the bushing and the second one on the end of the hull free from the bush to the radial holes.EFFECT: increasing the tensile force in the plane orthogonal to the borehole axis and excluding the effect of the device on the rock break force.5 cl, 1 dwg
Well perforator // 2641144
FIELD: oil and gas industry.SUBSTANCE: perforator comprises a monolithic body (6) with cavities (5) made in it perpendicular to its longitudinal axis, which are made directly in the material of the perforator body. Separately made mutually conjugate constructive parts of cumulative charge are tightly fitted directly in the cavities (5): outer cover (1) of the cumulative charge, a seal curtain-washer (2) or a gland, a cumulative funnel (3), a cartridge (4) of the main explosive. In addition, a detonation transfer amplifier (7), a sealing gasket (9), a detonating cord (10) and a bushing (11) with a groove are disposed in the body (6). Each charge is connected to the detonating cord (10), located in the channel made on the outer surface of the body and ballistically connected through the hole (8) with the cartridge (4) in the cavity (5). The cartridge (4) of the explosive of each of the charges is fixed directly to the body cavity (5) and is provided with a cumulative funnel (3) mounted thereon with an outer cover (1).EFFECT: increased efficiency of devices uses, simplification of its production, expanding the range of technologies and materials used for the production, reduced material consumption and number of components required for assembling.7 cl, 3 dwg

Use of logging instruments by pulsed neutron capture method to detect proppant near wellbore // 2641047
FIELD: oil and gas industry.SUBSTANCE: methods for identifying the location and height of artificially created fractures of a subterranean formation as well as the presence of any material associated with the packing according to the "frac pack" or gravel packing technique, near the wellbore with the use of logging instruments by the method of pulsed neutron capture are described. The proppant/sand used in hydraulic fracturing and packing processes is marked thermal neutron absorbing material. With the presence of proppant, the increased values of component capture cross-section of formation and/or wellbore in combination with reductions of measured values of metering rate detected by means of logging by the pulsed neutron capture method are used to determine the location of formation fractures as well as the presence and percent filling of packing material in the wellbore region. The changes in measured values of formation capture cross-section relative to changes in other logging parameters of the pulsed neutron capture method provide relative indication of proppant in fractures as compared to proppant in the wellbore region.EFFECT: improved efficiency for determining the location and height of particle packing according to frac pack technology.53 cl, 13 dwg, 6 tbl
ethod of separating solid phase from fluid medium (versions) and system for method implementation // 2640857
FIELD: machine engineering.SUBSTANCE: proposed group of inventions relates to methods of separating solid phase from fluid medium and can be used for separation of solid phase from drilling mud. Method of separating solid phase from fluid medium, in which: a main pipe is connected to a transverse-flow vibration screen for application of head to pulp, vibrations of are imparted to a chamber, pulp flow in tangential direction along the surface of filtering screens is provided, so that liquid from pulp passes through these filtering screens and a throttle hole. The method is carried out by means of a system comprising the transverse-flow vibrating screen, having a chamber imparted with vibrations during the screen operation; the main pipe, which is connected to the transverse-flow vibrating screen for applying pressure to the pulp in the direction of the transverse-flow vibrating screen; an inlet pipe connected to the main pipe for interfacing between the main pipe and the chamber; a filtering screen installed in the chamber of the transverse-flow vibrating screen, the throttle hole located in the chamber. The fluid in the pulp is separated while the pulp flows in the tangential direction through the filtering screen. Pulp flow through the chamber is limited by the throttle hole, and solid phase of the pulp is discharged from the chamber through the throttle hole.EFFECT: increased productivity and efficiency of solid phase separation from the fluid medium.20 cl, 9 dwg
ethod and device for recovery of horizontal well production and effect on formation // 2640846
FIELD: oil and gas industry.SUBSTANCE: method for recovery of horizontal well production and effect on formation includes the following steps. A complex device is first run into the horizontal wellbore consisting of a ground multifunctional control panel and control, and downhole acoustic radiator connected by a hose-cable of radial-type, a unit of geophysical instruments and an electro-hydraulic radiator with plasma discharger connected therebetween by geophysical adapters. Before completion of horizontal section, the instruments are tied by the geophysical unit. After that, the readings of downhole parameters are taken before treatment, the formation pores and the filters of the horizontal well section are cleaned acoustically. Plasma treatment of the cleaned section is carried out in order to involve dead formation zones by the source. Then, actual parameters are taken by the geophysical unit and the processes are repeated until the horizontal section of the well is covered completely. Electric hydraulic emitter is configured as a modular design and comprises a stabilisation unit, a capacitor bank, and a plasma discharger. The stabilisation unit contains a step-up-decoupling transformer which also supplies power to discharge gap plasma ignition unit. Plasma discharger consists of a body with inner cavity, whose upper part is connected to the connecting bushing, and the lower part is connected to the supporting bushing. In the body cavity there is a cylinder fixed on the middle part of the supporting bushing. The cylinder contains a piston with a rod, and a spring. Wire feed mechanism is secured in the upper part of the piston. The wire feed mechanism is in the form of a lever with a supporting platform and a link with spring. Directed incisions are made on the supporting platform and on the link from the side facing the wire. Four rods are attached to the cylinder that serve as a base for a coil fastening unit. The holes are made in the supporting bushing for arrangement and attachment of negative and positive electrodes. The electrodes are insulated with open sections providing plasma discharge. The negative electrode has an axial hole for passing the wire. A guide cone is fixed on the supporting bushing by means of posts.EFFECT: improved cleaning of bottomhole formation zone, increased well production rate.12 cl, 4 dwg

ethod for treatment of well with removal by means of material capable of decomposing // 2640618
FIELD: oil and gas industry.SUBSTANCE: method of fracturing and removal with degradable material comprising the steps: injection of wellbore treatment fluid into the well to enter the multi-layer formation and propagate the fracturing in the formation layer, injecting aqueous suspension containing fibers of insoluble material which is capable of decomposing in the solid phase for forming a plug from compacted fibres and isolating the hydraulic fracture from the well, where the decomposed material is present in the suspension at a concentration of at least 4.8 g/l (40 lbs/1000 gallons), and the liquid phase of suspension comprises a polymeric thickener, a viscoelastic surfactant, an auxiliary surfactant, a rheology modifier, a polymeric resistance reducing agent, a drag reducing surfactant, a polymeric resistance reduction enhancer, a monodimensional resistance reduction amplifier, an aqueous brine, or a combination thereof, or a mixture thereof, by means of the plug leading from the previous hydraulic fracturing, injecting the wellbore treatment fluid into the well to propagate the next hydraulic fracturing in another formation layer, and decomposition of decomposable material to remove the plug. The invention has been developed in the dependent claims.EFFECT: increased treatment efficiency.10 cl, 8 ex, 3 tbl, 13 dwg

Proppant with improved bubbles for hydraulic fracturing in wells // 2640614
FIELD: oil and gas industry.SUBSTANCE: method for forming gas-filled bubbles on the surface of proppant particle comprises the steps for placing proppant particles in water at operating pressure of 8000-12000 psi, creating excessive gas pressure in water equal to or greater than the operating pressure of 8000-12000 psi to create saturation around or in the immediate vicinity of proppant particle, in the result the bubbles are formed on surface of proppant particles, and excessive pressure relieves from water to operating pressure level. The invention has been developed in the dependent claims.EFFECT: improved efficiency of hydraulic fracturing.11 cl, 1 dwg

ethod for development of ash-nonuniform deposit of high-viscosity oil or bitumen // 2640608
FIELD: oil and gas industry.SUBSTANCE: method for developing the ash-nonuniform deposit of highly viscosity oil or bitumen includes determining zones of different permeability in the deposit, conducting construction above the water-oil contact of the horizontal well with the additional wellbores to open low permeability zones, pumping heat-transfer medium and extracting the product. Additional wellbores are drilled in one horizontal plane with main horizontal well into low permeability zones with permeability two times lower and more with respect to average permeability of the deposit. Injection of steam is carried out by pressure not exceeding the pressure of formation hydraulic fracturing, in volume not less than 10 t per 1 m of total length of horizontal section of the main wellbore and additional wellbores, and extracting at pressure not lower than destruction pressure of walls of additional wellbores, in addition between pumping and extracting, thermal capillary impregnation of the deposit is performed.EFFECT: involvement in the development of low permeability zones, increased homogeneity of displacement, increased coverage by the exposure, creation of uniform steam chamber in the nonuniform permeability formation.1 dwg, 1 ex

ethod of oil well operation // 2640597
FIELD: oil and gas industry.SUBSTANCE: invention can be used in the operation of the oil well equipped with a rod or electric centrifugal pump on multi-layer oil deposits. According to method, product of lower formation is taken through intake branch pipe passing through packer separating production formations. Withdrawal of the upper formation product is carried out through the side opening in the receiving branch pipe. Measurement of liquid and watering flow rate is carried out performed on the well day surface. Withdrawal of each formation product as well as measurement of their production rates and watering on the day surface are performed alternately after switching the shut-off body that communicates the formations with the pump intake. The pump is selected based on necessity to exceed its supply over the planned oil formation production rates in cycles of their connection, equal the underproduction of oil from formations in disconnection cycles. Periods of formation switching are selected based on the conditions to ensure scheduled oil sampling from each formation in accordance with their productivity.EFFECT: providing the possibility of separate accounting of liquids extraction from the formations and control of products sampling from each formation.4 dwg

Formations electric fracturing // 2640520
FIELD: oil and gas industry.SUBSTANCE: method is carried out in formations with a low permeability. The initial permeability of the formation is less than 10 mD. A pair of electrodes is set. Various voltages are supplied between pairs of electrodes of specified frequency. In this case, the potential difference is more than at least 10000 V. The potential difference between the pairs of electrodes is provided by pulses of less than 500 ns duration with the formation of plasma discharges. Rock mass is removed between electrodes to reduce stress in formation by at least 5% of initial voltage in formation. Due to electric arc, rock is removed in local area with formation of channels.EFFECT: increased permeability of formations.18 cl, 5 dwg

Device for formation fluid triggering off and well treatment // 2640226
FIELD: oil and gas industry.SUBSTANCE: device contains a body mounted on the tubing string with an input channel for supplying the working agent and a central supply channel of the pumped medium. At the top of the device there is a vortex mixing chamber with a flow energizer and outlet channels. A packer is connected to the body. It is designed to separate annular space. The central channel of pumped medium supply is flow-through. It passes through the upper part of the vortex chamber, where the seat pocket is made. A removable tubular insert with a U-shaped longitudinal section is freely disposed in this seat pocket. Radial channels are provided in it, communicating a central channel with a vortex chamber. In this case, the central channel is formed with a diameter enabling the well treatment equipment to pass through it after the insert is removed from the channel.EFFECT: improved efficiency of the device operation by reducing the terms of well testing, intensification of oil and gas inflows and the possibility of formation treatment with perforators and various solutions without removing the device from the well.1 dwg

ethod for synchronizing pulses in heterogeneous arrangement for hydraulic fracturing of formation // 2639345
FIELD: mining engineering.SUBSTANCE: method involves using a mixer to deliver proppant in pulsed mode to generate proppant pulses. The proppant pulses are mixed with fluid to produce proppant suspension containing proppant pulses separated by another fluid. The proppant suspension is divided between a plurality of pumps that inject the suspension into the well. To maintain non-uniformity, pumps rate is adjusted separately for control of dispersion of proppant impulses in descending flow of pumps and actually maintaining density of proppant pulses in the suspension.EFFECT: improved efficiency of hydraulic fracturing of the formation.11 cl, 9 dwg

Produced water treatment using seeded evaporator // 2639342
FIELD: chemistry.SUBSTANCE: following operations are carried out by the method of extracting oil: a) steam is produced; b) steam is introduced into a formation containing oil; c) a mixture of water and oil is withdrawn from the formation; d) produced water is separated from the mixture of water and oil; e) produced water is treated, which includes a treatment in a seeded evaporator to produce distillate and an effluent; e) distillate is used to produce an additional amount of steam for introduction into the formation; g) the solvent is mixed with the effluent, and h) the precipitated solids are separated, containing one or more salts from the effluent after step (g).EFFECT: increasing the efficiency of the water treatment.27 cl, 1 dwg

ethod for development of nonuniform permeability reservoirs // 2639341
FIELD: oil and gas industry.SUBSTANCE: method involves injecting aqueous suspension of pre-crosslinked polymer into the formation. For this purpose, a brand of pre-crosslinked polymer and processing technological parameters are selected taking into account individual geological and physical characteristics of the facility. Initial suspension of the pre-crosslinked polymer is prepared on the well by mixing at least two volumes of water and one volume of reagent, which is particles with initial size from 0.1 to 10 mm. After maturation for not more than 120 min the produced suspension is stirred in tank with water and pumped into injection well in working concentration of 0.1-0.5%. When pumping, the suspension of reagent particles is maintained in suspended state. At the same time, it prevents filtration of reagent particles into low- permeability portion of the reservoir due to initial sizes of reagent particles and their subsequent swelling. The range of permeability threshold below which the reagent is not filtered into the formation is permitted from 200 to 500 md depending on initial fraction and swelling value. Reagent concentration is controlled depending on reagent injection pressure.EFFECT: increased efficiency when developing non-uniform permeability reservoirs with water drive operation mode due to additional oil production, reduced or stabilized rate of water content growth.6 cl, 7 dwg, 1 tbl

Particles containing one or multiple crosslinked active substances with controlled release // 2639232
FIELD: chemistry.SUBSTANCE: particle of cross-linked substance preventing the formation of deposits for oil production operations, for a cooling tower water source, comprising a substance preventing the formation of deposits and a crosslinking reagent. The substance preventing the formation of deposits is crosslinked with a crosslinking reagent. A method of producing particles according to the present invention. Methods for performing a mechanical fracturing operation to reduce formation of deposits in an oil well and in a cooling column using particles according to the present invention. The invention is developed in the dependent points of the formula.EFFECT: increasing the efficiency of processing by using these particles.41 cl, 35 ex, 13 tbl, 1 dwg

Subsea power module // 2639011
FIELD: power industry.SUBSTANCE: subsea power module comprises a strong housing in the form of a cylindrical shell with spherical ends, reinforced by stiffener rings, power equipment including energy generation equipment and energy distribution equipment and is attached to the subsea foundation base by the connecting device. The strong housing is divided into at least two strong housings, one of which houses energy generation equipment, and the other - energy distribution equipment. The connecting device is made in the form of a cassette, and the strong housings are vertically integrated into the mentioned cassette with the possibility of their separate removal therefrom. Each strong housing is provided with a lid located at one of its ends, connected to the housing by means of detachable waterproof connection, and energy generation and distribution equipment inside the mentioned strong housings is mounted in a volumetric frame built-in with a ring clearance in the strong housing and fixed from the inside on the mentioned end lid. Above the stiffener rings, on the outside, along the perimeter of the cylindrical shell of the strong housing, guides are placed parallel to the generatrices of the shell.EFFECT: increased efficiency of the subsea power module.3 cl, 4 dwg
ethod for production of high-viscosity oil // 2639003
FIELD: oil and gas industry.SUBSTANCE: method of production includes equipping the well with a casing pipe with two open zones on horizontal or inclined section, lowering the casing pipe of the lower tubing string with heat-resistant packer until the area between the opened zones is reached, lowering a submersible pump on the upper tubing string to first a opened zone, performing cyclic pumping of the heat carrier along the lower tubing string and lifting water-oil emulsion by the submersible pump to the surface. Prior to running, the lower tubing string with the heat-resistant packer is connected by its upper end to a bypass pipe mounted on the submersible pump, and they are lowered together on the upper tubing string. After completion of running into the upper tubing string, an additional pipe with annular gap and which is hydraulically connected to submersible pump outlet is introduced. When carrying out cyclical pumping, the heat carrier is delivered to the lower tubing string through the annular gap and a bypass pipe. The oil emulsion is lifted to the surface through the additional pipe.EFFECT: improved efficiency of oil production by simplifying and accelerating the installation of equipment.1 dwg

Drill string filter // 2638679
FIELD: mining engineering.SUBSTANCE: filter includes a perforated pipe with an adapter, a grip and a supporting ring installed at the tapering in the axial channel of a hollow body. The body of the upper adapter has bypass openings hydraulically connecting the axial channel of the drill string with the inner cavity of the perforated pipe. The grip is provided with a flow turbulizer located in the axial channel of the perforated pipe and made in the form of a rod, in the middle part of which there is a row of transverse cuts arranged in staggered order in height. A helical spiral cut is made at the lower end of the rod. The perforated pipe is made in the form of truncated cone and provided with a bottom with a row of drain holes and central hole in the form of a conoid nozzle.EFFECT: improved efficiency and reliability of filtration.1 dwg

Device for interval hydraulic fracturing of formation // 2638673
FIELD: oil and gas industry.SUBSTANCE: device for performing interval-by-interval fracturing of the formation comprises a tubing string with a hollow cylindrical body connected to packer through a tail-piece at the bottom. A hollow bushing is mounted radially and rigidly in the hollow cylindrical body. A piston-punch is positioned inside the hollow bushing for limited radial movement, and configured as a cone narrowing outwards with a throttling L-shaped channel in the center. At that, the piston-punch is equipped with external radial groove communicating with the throttling L-shaped channel. The piston-punch is spring-loaded by a spring inside from the sleeve rigidly fixed in the end of the hollow bushing. In this case, a radial channel is made in the hollow bushing. In the initial position the radial and the throttling L-shaped channels are hermetically separated from each other, in the working position the vertical and throttling L-shaped channels are hydraulically communicated with each other by means of a radial groove connecting the hollow cylindrical body cavity with rock of production reservoir. A dynamic anchor is installed in the upper part of the hollow cylindrical body, and a subsurface gauge is installed under the packer.EFFECT: improved performance of the device when conducting hydraulic fracturing of the formation.2 dwg
ethod of thermofoam-acid treatment of near-well zone of carbonate reservoir // 2638668
FIELD: oil and gas industry.SUBSTANCE: method of thermofoam-acid treatment of the near-well zone of the carbonate reservoir involves simultaneous pumping of acid and gas-generating compositions through two channels separated from each other with their subsequent pumping in the formation. An aqueous solution of urea with sodium nitrite is used as a gas generating composition containing, wt %: urea 28.4-38.4; sodium nitrite 18.2-27.6; water is the rest. As an acid composition, the aqueous solution of inorganic acid with additives is used. In this case, in the acid composition the aqueous solution of hydrochloric acid of 19-26% concentration is used as inorganic acid, 2-alkylimidazoline is used as additive in concentration of 5-15 wt % and phosphorous acid in concentration of 0.5-2.5 wt %. The volume of acid composition is1-3 m3 per linear meter of processing interval for vertical wells and0.1-0.2 m3 - for horizontal wells. The compositions are pumped by killing fluid or commercial oil in volume of cavity of pumped channels plus 3-5 m3 followed with well closure for 4-12 h for reaction of acid composition.EFFECT: extended application field of the technology due to reagents resistant to high temperatures while reducing the processing costs by reducing the amount of used equipment.4 cl, 2 ex

Direct channeling method and system for increasing fracture conductivity // 2638667
FIELD: mining engineering.SUBSTANCE: method for processing an underground formation with a well passed therethrough, and in which the stage composition is pumped for treatment with pressure higher the fracture pressure to generate the fracture in the formation, at that the fluid contains constant concentration of first solid particles and non-constant concentration of anchor material, the first solid particles distributed in the fracture are combined to form spaced-apart clusters in the fracture in order to slow the combination of at least some of the clusters, and the pressure in the fracture is reduced to keep the fracture open on the clusters in order to form hydraulically conducting channels interconnected between the clusters. The method for processing the underground formation with a well passed therethrough, the first solid particles are pumped into the formation at a constant concentration in the formation, at the same time maintaining constant rate and concentration of the first solid particles during the pumping stage of the composition for treatment, there is gradual alternation of the concentration of the anchor material in the composition stage for treatment between a plurality of levels relatively enriched with the anchor material and a plurality of levels depleted by the anchor material in the pumped stage of the composition for treatment. The method for processing the underground formation with a well passed therethrough the treatment composition is pumped into the formation at a constant rate, comprising a thickened carrier with constant concentration of the first solid particles to form a uniform area in the fracture with a constant uniform distribution of the first solid particles, successive alternation of concentration levels of the anchor material in the composition for treatment between the levels enriched with the anchor material, and the levels depleted by the anchor material, in the pumped stage of the composition for treatment in order to form non-uniform areas containing sections enriched with the anchor material and sections depleted by the anchor material in a homogeneous area with a constant uniform distribution of the first solid particles, lowering the viscosity of the carrier in a uniform area to initiate precipitation of the first solid particles prior to fracture closing, in order to form hydraulically conducting channels at least in sections depleted by the anchor material and columns in sections enriched in anchor material; and then provide closing of fracture on columns. Variants of systems for treatment the underground formation with a well passed therethrough according to said methods. The invention is developed in the dependent claims.EFFECT: increased treatment efficiency.29 cl, 1 ex, 13 dwg

Underwater well hydraulic system // 2638492
FIELD: machine engineering.SUBSTANCE: electric machine comprises a rotor and a stator located in a first casing under predetermined operating conditions. The hydraulic part contains a blade impeller and is connected to the electric machine. The underwater well hydraulic system also includes a variable speed drive for the electrical machine in the casing. The underwater well hydraulic system also includes a process fluid inlet connector hydraulically communicating with hydraulic part and adapted to be connected to fluid outlet connected to wellhead assembly.EFFECT: increase in volume and extraction rate for products recovered from the underwater well.48 cl, 17 dwg

Underwater treatment of wellbore fluids // 2638199
FIELD: oil and gas industry.SUBSTANCE: paraffin control element for underwater treatment of wellbore fluids in a well flow comprises a bundle of field lines within a tension structure which forms inlet and outlet ends and has cooling and heating means for use on production pipelines, to promote deposition of paraffins in pipelines and subsequent involvement of paraffins into the well flow.EFFECT: improved efficiency of underwater treatment of the wellbore fluids.18 cl, 13 dwg

Electric detonator for shooting-blasting operations protected against stray currents // 2638073
FIELD: blasting.SUBSTANCE: device includes a detonator cap and an electric igniter provided with a transformer that provides protection against stray currents. Transformer represents a core made of magnetodielectric material based on Mo-perm alloy, onto which two windings are wound. The primary winding is connected to the power supply line, the secondary winding is closed to the filament bridge of the electric igniter. The number of turns in the primary winding W1 is determined by the ratio W1≥(50000/μ)0.5, where μ is the initial magnetic permeability of the core material, and ratio of turns of primary and secondary windings is not less than 2 and not more than 4.EFFECT: increased hydrobar resistance of the electric detonator which makes it possible to use it in deeper wells.1 tbl, 1 dwg

ethod for development of kerogen-containing beds of bazhenov formation by intra-formational combustion with introduction of additional fuel // 2637695
FIELD: oil and gas industry.SUBSTANCE: additional fuel - a mixture of light oil produced from said formation and naphthalene with 1-19 wt % concentration is pumped into the beds of bazhenov formation. An oxygen-containing mixture - air is also pumped. Fuel is formed with conversion of light oil to heavy oil with increase of its density and viscosity. The injection of air is continued until the formed fuel is ignited in the bottomhole zone of injection well. The combustion front is created by said fuel and heat is applied to kerogen-containing rocks to form crack network therein. Oxidation and self-ignition of kerogen contained in rock of bazhenov formation are carried out. Kerogen is used as fuel source and kerosene-containing beds are involved in the development. The product is taken through production wells.EFFECT: increased formation recovery by involving kerogen-containing sections of the formation in the development.4 cl, 3 dwg, 1 tbl

Device for release oil gas from annulus // 2637683
FIELD: oil and gas industry.SUBSTANCE: device comprises a tubing string, a pumping unit and a wellhead shut-off valve. There is also a discharge branch pipe. It is communicated with the tubing string. The device has an inlet and a check valve. This valve is provided with adjustable opening for providing required level of liquid in the annulus and communicated with the tubing string above the tubing string connection with the discharge branch pipe. Beyond the wellhead fittings said branch pipe is comprised of wellhead shut-off fittings upraised to a height not less than the inner diameter of discharge branch pipe. The oil gas release is provided through the tubing string with the use of appropriate stroke of sucker-rod pump plunger or stopping and subsequent starting of electric submersible pump.EFFECT: simplification of the device and provision of possibility for using when operating with electric submersible pumps and submersible plunger-rod pumps.2 cl, 3 dwg

ethod for determining water content of borehole oil // 2637672
FIELD: oil and gas industry.SUBSTANCE: method of determining water content of borehole oil consists in fixation of well product in a reservoir with constant cross-section along its height, holding well product in the reservoir to provide gravitational separation into oil and water, and determining water content of well product by the height of water portion relative to the entire height of liquid in the reservoir. A check valve is installed above the deep well pump. After the operation of the deep well pump is stopped, associated oil gas is discharged from the tubing string with pressure reduction down to atmospheric value. The static level of liquid in the tubing string is measured several times until it's the value is constant and the volume of liquid in the tubing string is determined. By putting the deep well pump in the operation, well product of known volume is transferred from the tubing string into a reservoir located on the earth surface. The pressure in the pipeline line is maintained at a level equal to pressure at the well outlet line during its normal operation.EFFECT: providing better separation of well product into oil and water without stopping the operation of the deep well pump for a long time.1 dwg

ethod for preventing hydrate formation in field systems of gas collection // 2637541
FIELD: oil and gas industry.SUBSTANCE: according to method, inhibitor of hydrate formation is supplied to the loop. To determine the beginning of hydrate formation process, gas temperature is measured at wellhead, actual gas temperature at the loop outlet and ambient temperature are determined. Certain rated values of gas temperature are calculated by the determined model. The actual value of the temperature at the loop output is compared in real with the base value. Additionally, in real-time mode the pressure is measured at wellhead and at the loop output. The theoretical rated value of hydrate formation temperature is taken as the basic temperature value. If actual temperature at the loop output is reduced to values below the base value, the actual pressure value at the loop output is compared with the value obtained in previous measurement cycle, and actual pressure value at the wellhead is compared with the value obtained in previous measurement cycle. If this pressure at the wellhead is increased by certain value and the pressure at the loop output is reduced by certain value, the specific values of which are determined by the cognitive model for given loop, and these dynamics is maintained for a period of time also determined by the cognitive model, then the beginning of hydrate formation process is diagnosed. First, supply of inhibitor to the loop is increased. If pressure values at wellhead and the loop output do not go beyond specified cognitive model, then the theoretical rated value of hydrate formation temperature is corrected according to the cognitive model. The theoretical estimated value of hydrate formation temperature is determined by determined model defined by analytical expression.EFFECT: optimized hydrate formation inhibitor consumption and improved operation reliability of gas collection field systems.3 cl, 2 tbl, 3 dwg
ethod for formation of cracks or fractures // 2637539
FIELD: oil and gas industry.SUBSTANCE: method of formation of cracks or fractures includes determination of directions of regional maximum stresses of pay rocks, movement directions of main volumes of injected water and filtration flows, determination of sections with high residual oil saturation, two-stage hydraulic fracturing of formation with changing of direction of crack fractures in wells which are in the zones with high residual oil saturation or close proximity.EFFECT: increased efficiency of the method for forming cracks and fractures.4 cl, 5 dwg

Downhole device and method // 2637351
FIELD: oil and gas industry.SUBSTANCE: bottomhole actuator (30) includes a tubular casing (34) that includes a profile (42) of step-by-step displacement on its inner surface and a bushing (46) of step-by-step movement mounted in the casing (34). A bushing (46) of step-by-step movement comprises an engaging device including first and second axially spaced engagement elements (52, 54) with the profile (42) of the casing (34) step-by-step movement for step-by-step engagement by a control object (48) passing through a central channel (50) of step-by-step for moving the step-by-step bushing (46) by one discrete movement step through the casing (34) to actuation location.EFFECT: increased efficiency of the downhole device and method of its use.28 cl, 51 dwg
Complex method and device for performing perforation of wells and associated technological operations (versions) // 2637349
FIELD: oil and gas industry.SUBSTANCE: method includes lowering a tubing string including a hydromechanical perforator comprising a dispensing unit to control the flow of working fluid, a tool or combination of process equipment for carrying out required operations in the well; supplying the working fluid through a distributing unit of the perforator under the perforator to the process equipment or into bottom of the tubing string to annular space; performing appropriate process operations by means of process equipment; feeding working fluid through the distributing unit into the perforator; performing perforation; working fluid is fed through the distributing unit of the perforator to the process equipment or into bottom of the tubing string into the annular space; performing corresponding process operations after perforation with the help of process equipment.EFFECT: reduced time for complete complex of operations associated with perforation of wells and associated operations: milling a wellbore, cementing the well, cleaning the walls of the production string by means of a scraper, washing the well bottom with a feather, namely, carrying out a complex of operations in one running-lifting operation.38 cl, 1 dwg

Device for perforating wells and gas-dynamic action on formation // 2637267
FIELD: oil and gas industry.SUBSTANCE: device for perforating wells and gas-dynamic effect on formation comprises a body, a frame with seats, shaped charges, solid-propellant charges located inside and outside the body, a detonating cord. The inner solid-propellant charges are placed between the frame and the body in the form of strips enclosing the frame. Ratio of mass of internal solid fuel charges to the mass of shaped charges does not exceed 1:2.EFFECT: increased efficiency of gas dynamic action on the formation.1 dwg
Thermo-gas-chemical binary composition and method for treatment of bottom-hole and remote zones of oil and gas bearing formation // 2637259
FIELD: oil and gas industry.SUBSTANCE: composition contains equimolar solutions of ammonium salts of mineral acids and alkali metal nitrites with initiating solution, aldehyde solutions containing alcohols or acetone are used as initiating solution converting aldehyde moieties to hemiacetals that have reduced reactivity which provides an induction period sufficient for safe pumping of initial reagents into oil and gas formation. The method includes injection of thermo-gas-chemical binary composition: the solutions of ammonium salts of mineral acids and nitrites of alkali metals with initiating solution into the formation. Mixing of solutions of ammonium salts of mineral acids and alkali metal nitrites with the initiating solution is carried out in intensive stirring mode before the beginning of thermo-gas-chemical binary composition injection into the oil and gas bearing formation.EFFECT: increased efficiency for bottom-hole and remote zones treatment of oil and gas bearing formation, safety of the process, reduced raw costs.6 cl, 2 dwg, 5 tbl, 20 ex

ethod for checking fracture geometry for microseismic events // 2637255
FIELD: measuring equipment.SUBSTANCE: drilling site is located near a subterranean formation with a borehole drilled in it and a complex fracture network. The complex fracture network includes intrinsic fractures. The drilling site is intensified by injecting a pumped fluid with a propping agent into the complex fracture network. The method includes creating drilling site data including measurements of microseismic events of the subterranean formation, simulating a network of hydraulic fractures and a discrete fracture network for the complex fracture network based on the drilling site data, and performing a seismic moment operation. The method includes determining the actual seismic moment density based on the drilling site data and the predicted seismic moment density based on the shear and stretch components of the simulated hydraulic fracture network and checking the discrete fracture network based on the comparison of the predicted moment density and the actual moment density.EFFECT: improved efficiency of the fracturing operation at the drilling site.12 cl, 7 tbl, 85 dwg

ethod and device of jet parametrical gun with two toroidal chambers for pressure waves generating and modulating in the injection well hole // 2637009
FIELD: oil and gas industry.SUBSTANCE: group of inventions is designed for the casing walls and perforations cleaning from solid deposits, decolmatation of the bottomhole formation region (BFR) and increase of formation fluids mobility. The method of the pressure waves generating and modulating in the injection well hole, in which: the jet gun is used. The gun consists of the ring channel with sharp edges on the outer and inner walls and combined with the channel of external and internal toroidal-shaped swirl resonance chambers (TSRC). TSRC are made on the walls of the channel and represent two independent acoustic oscillating systems, which are excited, when the gas flow is leaking on the sharp edges, made to meet the flow, in which both TSRC serve as the resonators. Arrange the gas flow in the ring channel. Generate the primary oscillations of small amplitude pressure in the local region near the sharp edges, when the gas flow is leaking on them. Deviate the nearwall parts of the flow inside both TSRC and intensify the amplitude of the primary pressure oscillations in both TSRC, which natural oscillation frequency is tuned into the resonance with the generation frequency of the primary pressure oscillations at the corresponding sharp edge. Pressure waves are formed in the gas flow inside the channel. Moreover, the primary pressure oscillations of different frequencies are generated on the external and internal sharp edges and intensify its amplitude in the corresponding TSRC, and additional volume resonance chamber is installed at the output from the channel. In this case, primary low-frequency pressure oscillations are generated on the external sharp edge and intensify its amplitude in the external TSRC, and on the inner sharp edge the primary high-frequency pressure oscillations are generated and intensify its amplitude in the internal TSRC. Thus, two acoustic waves of low and high frequencies are formed in the channel, which during interaction and mutual modulation, create the beat mode in the channel and form the wave packet in the channel, containing along with the primary frequencies waves and the difference frequency wave, which amplitude is intensified in the additional volume resonance chamber at the output from the channel and then the pressure wave is directed into the injection well hole.EFFECT: increase of fluid mobility in the injection well hole and enhance of mechanical effect on solid deposits.3 cl, 1 dwg

ethod and device for jet honeycomb parametrical gun for pressure waves generating and modulating in the injection well hole // 2637008
FIELD: oil and gas industry.SUBSTANCE: group of inventions is designed for the casing walls and perforations cleaning from solid deposits, decolmatation of the bottomhole formation region (BFR) and increase of formation fluids mobility. The method of pressure waves generating and modulating in the injection well hole, in which: the jet honeycomb gun is assembled from several Hartmann generators (HG). At that each HG is the independent oscillatory system, consisting of the nozzle and hollow chamber-resonator with the opening in the wall and excited by the gas jet. Arrange the gas jet beyond the nozzle in each HG and direct it into the hole in the corresponding hollow chamber-resonator wall. Generate the pressure oscillations and intensify its amplitude in the hollow chamber-resonator. The high-frequency pressure wave is generated beyond each HG, propagating in one direction with the waves from other HG and interacting with them. At the same time HG is different-frequency independent oscillating systems. One part of different-frequency independent oscillating systems is tuned to the generation, amplification and formation of the high-frequency wave of one frequency, and the other part of independent oscillating systems - to another frequency. In this case, the jet honeycomb gun is installed in the well. Form the parallel high-frequency waves of two different frequencies beyond it, interacting with each other and forming the low-frequency wave of different frequency as the result of modulation in the nearfield, which is amplified in the low-frequency resonance chamber and directed to the injection well hole.EFFECT: increase of the low-frequency pressure wave formation efficiency with high amplitude in the bottomhole formation region.3 cl, 2 dwg
ethod of extracting oil, gas, condensate from well // 2636988
FIELD: oil and gas industry.SUBSTANCE: according to the method when the productivity of the well is reduced due to deposits of high-molecular compounds in the bottomhole zone, the regeneration of the bottomhole zone is carried out. It is performed by temporary transfer of the well from operational state to regenerative state. The bottomhole zone is first treated with supercritical fluid of carbon dioxide successively in dynamic and static modes. In dynamic mode of regeneration state, the injection periods of carbon dioxide supercritical fluid supplied to gas-bearing formation through the well are successively alternated with pressure change from the larger p1 to the smaller p2. In the static mode of regeneration state, the bottomhole is kept at the maximum pressure of supercritical fluid of carbon dioxide. Then the well is exposed to pressure equalization in the well and gas-bearing formation without further introduction of supercritical fluid of carbon dioxide under conditions of spontaneous movement of "high-molecular compounds-fluid" solution present in the gas-bearing formation, and returned to the production state.EFFECT: increased well productivity due to intensification of dissolution and extraction of high-molecular compounds.7 cl, 4 dwg
ethod for taking deep samples of formation oil in well when testing and coupling for directing flow of formation fluid for its implementation // 2636843
FIELD: oil and gas industry.SUBSTANCE: in order to implement the method, a tubing string equipped with a mounting nipple for installation of sampling equipment and the coupling for directing the flow of formation fluid at the tubing bottom are lowered into the well. After depression is created, the evaluation of inflow rate and presence of oil in the inflow is carried out. The time required for oil to fill the tubing below the nipple is calculated by the inflow rate, and the operation time of the sampler is determined. The method includes running equipment consisting of a mandrel for hermetic seating into the seat nipple on the tubing of shut-off valve together with the sampler and a deep self-contained thermomanometre. Air-tight fitting of equipment into the seat nipple is performed, thus shutting-off the tubing string by the plug-in equipment. This creates conditions for accumulation and selection of depth sample of formation oil in the well in close proximity to the formation top. The formation oil is directed through the coupling for directing the flow in drop-jet form at low depression into the tubing string space, the sample is separated and accumulated in the rated period under the shut-off valve and the deep sample of the formation oil is taken out by the sampler installed together with the shut-off valve.EFFECT: providing sampling of representative samples of formation oil, the application of which is possible at non-flowing test facilities.2 cl, 3 dwg, 1 tbl
ethod and arrangement for controlled injection of liquid through formations // 2636842
FIELD: oil and gas industry.SUBSTANCE: in well on tubing string, an arrangement of underground equipment is lowered including funnel/beveled end, a lower packer device, a deep-well research complex with geophysical cable, a well filter with a sludge trap, an injection valve without choke/blind insert, an upper packer device with a cable inlet. A device for sealing cable inlet and a head reinforcement with cable inlet are installed at the wellhead. An interface is installed on the surface, which makes it possible to read the parameters of the injected liquid in online mode and with the possibility for storing data and transferring data to a removable device and/or transmission of data over the GSM communication. Seating of packer devices and their pressing is carried out. The liquid is fed into pipe string cavity. The parameters of injected fluid injected into the lower formation are measured by means of deep research complex. By subtracting the flow rate of liquid pumped into the lower formation from the total flow rate of the injected fluid, the flow rate of the fluid injected into the upper formation is determined. The diameter of the union insert is selected according to formation injectivity and formation pressure. The union/blind insert of the injection valve is lowered, and controlled injection of liquid is carried out.EFFECT: providing controlled injection of liquid into two formations by measuring the parameters of injected fluid with minimum number of pulling and running operations.9 cl, 1 dwg

ethod for disposing associated petroleum gas using exhaust flare gases // 2636837
FIELD: oil and gas industry.SUBSTANCE: method includes the use of flare separator, a flare plant with a device for collecting exhaust gases, working chambers, settling tanks and spark plugs for reducing a portion of combustible associated petroleum gas (APG). For this purpose, one APG portion is fed into working chambers for its compression and temperature rise. The other APG portion is supplied to the flare plant for combustion with subsequent collection of exhaust gases and their supply to the working chambers to transmit the thermal energy. The working chambers are divided into two sections - a heater and a cooler. A movable piston is placed therebetween. At least two working chambers are used. Their pistons are rigidly connected by a crank with 90 degrees movement.EFFECT: increased efficiency of the method due reduced the proportion of burned associated petroleum gas at the flare plant and the use of heat energy the flare plant to increase the pressure and temperature of associated petroleum gas for further transportation with remaining produced product.2 dwg
 
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